Okay, it's been a while since I've done this. The new Sphere is coming along nicely. We have a mechanism for using multiple resolutions worked out. (Apparently 320x240 isn't good enough for you people, eh?). I'm also converting core parts of the engine to C++ to prevent bugs and make the code easier to read and maintain.

SDE has a working (and fast!) map editor now. However, it only works on one layer and the alpha channel doesn't work yet. I'm making progress though!